Cutlery-grinding machine.



No. 886,754. 'PATENTED MAY 5, 1903.

- W. J. BASTIAN & F. GRAN'ITZ.

GUTLERY GRINDING MACHINE APPLICATION FILED JULY 22. 1907.

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No. 886,754. PATENTED MAY 5, 1908. W. J. BASTIAN & P. GRANITZ.

GUTLERY GRINDING MACHINE. APPLIcATIoN IILED JULY 22; 1907.

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No. 886,754. PATENTED MAY 5, 1908. W. J. BASTIAN & P. GRANITZ.

OUTLERY GRINDING MACHINE.

APPLICATION FILED JULY 22. 1907.

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GUTLBRY GRINDING MACHINE. APPLICATION FILED JULY 22. 1907.

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WILLIAM J. BASTIAN AND FRANK GRANITZ, OF CHICAGO, ILLINOIS, ASSIGNORS TOAMERICAN CUTLERY COMPANY, A CORPORATION OF ILLINOIS.

CUTLERY-GRINDING MACHINE.

T 0 all who m it may concern:

Be it known that we, WILLIAM J. BAS- TIAN and FRANK GRANITZ, citizens ofthe United States, residing at Chicago, in the county of Cook and Stateof Illinois, have invented a new and useful Improvement inCutleryGrinding Machines, of which the following is a specification.

Our invention relates to improvements in cutlery-grinding machines andmore particularlyto those of the class in which the grinding isperformed in a single reciprocation of the work-carrier; and our objectis to provide novel and improved means for effecting the throw of thework-holder to produce grinding of the work being operated on, duringthe movement of the work-holder in one direction only.

Referring to the accompanying drawings, Figure 1 is a broken top planview of a cutlery-grinding machine embodying our invention; Fig. 2, anenlarged broken view in sectional elevation of the fluid-pressure motorfor reciprocating the workholder; Fig. 3 is a broken plan view of themechanism for moving the work-holder toward and away from thegrinding-wheel showing its position when the work-holder is out ofgrinding position; Fig. '4, a view in side elevation of the same; Fig.5, a broken section taken at the line 5 on Fig. 4 and viewed in thedirection of the arrow; Fig. 6, an enlarged view in elevation, andpartly broken, showing mechanism for controlling the forward and reversemovement of the work-holder, and mechanism for momentarily arresting theworkholder at the end of its forward stroke while it is being movedtoward the grinding-wheel, the parts being shown in the positions theyoccupy immediately after the operating lever has been moved to operatethe machine, but before the machine has commenced to operate; Figs. 7and 8, views similar to that shown in Fig. 6, but showing the parts intwo different positions they occupy intermediate the starting of themachine to move the work-holder forward, and the reversal of themovement of the work-holder; and Fig. 9 a view similar to those shown inFigs. 6, 7 and 8, showing the positions the parts'occupy immediatelyafter the movement of the operating lever for reversing the movement ofthe work-holder.

The main frame 10 of the machine is formed with a water-receptacle 11 inwhich Specification of Letters Patent.

Application filed July 22, 1907.

Patented May 5, 1908.

Serial No. 384,866.

a hollow cylindrical grinding-wheel 12, having an inwardly-taperingannular grinding surface 13, rotates, and adjustably pivoted at 15 tothe frame 10 is a horizontal baseplate or bed 14. A rod 16 reciprocablelongitudinally of the bed and preferably angular in cross-section slidesin guides 17 thereon and carries a U-shaped work-holder 18 in positionto reciprocate work, held therein, past the grinding surface of theWheel, the rear arm 19 of the holder extending across the bed andforming a cross-head, for a pur pose hereinafter explained.

, As means for reciprocating the Workholder, we have illustrated afluid-pressure motor 20 secured on the swinging end of the bed. Themotor illustrated in the drawings comprises, generally stated, acylinder 21 containing a piston 22 on a piston-stem 23 operativelyconnected with the cross-head 19, as hereinafter explained; avalve-chamber 24 having inlets and outlets 25, 26, communicating withthe cylinder at its opposite ends, and a valve-rod 27 in the chamber 24provided with pistons 28 and 29, for controlling the introduction offluid pressure to the cylinder, the pistons being so arranged as tocause the fluid admitted at 30 to enter the cylinder at its front endwhen the valve-rod 27 is moved inward to the position shown in Fig. 2,and to enter at its rear end when this rod is moved outward, ashereinafter explained. The valve-stem 27 carries on its outer end aplate 31 and encircling this stem and confined between an end. of thisplate and the valve-chamber 24, is a spring 32 for holding thevalve-stem 27 in normally out-v wardly-pressed condition, in whichcondition the fluid pressure is free to flow into the forward end of thecylinder.

An operating lever 33, fulcrumed at one end to the guide 17 andpivotally connected with an end of the plate 31, serves, when moved tothe position indicated by dotted lines in Fig. 1, to shut off the flowof fluid to the front end of the cylinder and to direct it into the rearend thereof, the position of the valve-pistons, when the operating leveris so moved, being that shown in Fig. 2. The lever 33 is releasably heldin its spring-pressed condition by latch-mechanism 34 consisting of abell-crank lever 35 pivoted to a standard. 36 on the bed, and comprisinga horizontally extending arm 37 provided with a shoulder 38 and acam-surface 39 adjacent to it,

and a depending arm 40 in the path of tri ping mechanism, hereinafterexplained. T e end of the cross-head 19 is provided with a horizontalrecess 41, through which the outer end of the piston-stem 23, and aguide-rod 42 for the outer end of the cross-head, extend. A block 43slidably confmed in the recess 41 has slotted plates 44 and 45 securedon its opposite sides, fiush with the top surface of the cross-head, andconfined between the plates at their outer ends is another block 46 inwhich a horizontally-disposed roller 47 is journaled. The block 43 isprovided on its inner end with a'stud 48 having an eye 49, and pivotallyconnected with this stud, at its eye, is a knuckle 50 composed of twolinks 51 and 52 pivotally connected together, the link 52 having aroller 53 at one end for engagement with the inner end wall of therecess 41. The outer end of the piston-rod 23 is rigidly fastened to thelink 52 and carries on its outer end beyond the link a sleeve 54, awasher 55 and a nut 56, and, a slight distance in the rear of the link,a washer 57. Both of the washers 55 and 57 are of greater diameter thanthe width of the recess 41, so that the movement of the piston-stem 23in the recess 41 is limited in both directions, as represented in Figs.3 and 5.

The roller 47, by reason of a spring 58 connected at one end to theswinging end of the bed and at its other end to the frame 10, ismaintained in constant engagement with the side surface of a guide-bar59 adjustably mounted at both ends on the frame, as indicated at 60, 61.Thus the work-holder is moved toward or away from the grinding wheeldepending on the straightening or collapsing of the knuckle. A rod 62slidably mounted in the standards 36 and 63 carries three adjustabletappets 64, 65 and 66, one

' on its extreme forward end in position to engage with the arm 40 ofthe lever, and the others between the standards 36 and 63 and spacedapart to be engaged by the cross-head 19, for a purpose hereinafterexplained.

Adjustably mounted on a bar 67 above the rod 42 is a locking device 68,a rod 69 screwing into the standard and engaging the looking devicebeing provided for adjustment purposes. The locking-device has a recess70 in its under side and pivoted in this recess and normally downwardlyspring-pressed is a catch 71 having a cam-surface 72 and a shoulder 73.The catch, when the knuckle is collapsed as shown in Fig. 3, is in aplane to drop at its shoulder 73 into the lowermost portion of a recess74 provided in a plate 75 secured on the forward plate 45 and having itsbottom inclined as represented at 76 in the drawings.

Assuming the machine to be at rest, as represented by full lines in Fig.1, to operate it the handle 33 is drawn forward against the tension ofthe spring 32 to the position represented in dotted lines in Fig. 1whereupon the lever is releasably locked by engagement with the lockinglever 35, as represented in Fig. 6. Movement of the lever 33 to thisposition causes the fluid pressure to enter the front end of thecylinder, thereby forcing the piston and stem backward, the firstmovement-of the piston stem causing the knuckle 50 to collapse to theposition shown in Fig. 3, in which the washer 57 abuts against the frontface of the cross-head 19. Collapsing of the knuckle shortens thedistance between the rollers 53 and 47 and thus, through the action ofthe spring 58, causes the bed to move toward the roller 47 and guide-bar59 and away from the wheel 12, in which position the work to be groundis out of engagement with the grinding-wheel. As the cross-head nearsthe end of its outward stroke it engages at its lower edge with thetappet 66 and at its upper edge with the cam-surface 72 of the catch 71,raising the latter and causing it to ride upon the upper surface of thecrosshead. Continued movement of the crosshead moves the ta met 66forward, and with it the rod 62, until the tappet 64 has swung the lever35 to the releasing position represented in Fig. 9 whereupon the lever33 springs back to normal position, thereby oper-- ating thevalve-mechanism to direct the flow of fluid pressure into the forwardend of the cylinder to return the piston 23 and with it the work-holder.

Immediately preceding the tripping of the lever 33, as explained, thecatch 71 at its shouldered end drops into the recess 74, and thus whenthe piston-rod 23 begins its return stroke the cross-head is heldagainst movement with it until released from the catch 71. The firstefiect, therefore, of the initial return movement of the piston is tostaighten the knuckle 50 and thereby cause the distance between therollers 47 and 53 to be lengthened, with the effect of causing the bed14 to be moved toward the grindingwheel to a position in which the workin the work-holder will bear against the grindingsurface of the wheel.As the bed carrying the catch 71 moves toward. the grindingwheel, thecatch 71 rides upon the inclined bottom 76 of the recess 74 and by thetime the knuckle has straightened out and the piston 23 has thus becomerigid with the crosshead, the catch 71 has been withdrawn from therecess, releasing the cross-head and permitting it to be returned tonormal position with the piston. As the cross-head nears the end of itsreturn stroke it engages the tappet 65, moving the rod 62 with it to theposition represented in Fig. 6 in which position the machine is incondition to be again operated as described.

While we have illustrated and described our invention in connection witha certain construction of machine, we do not thereby intend to limit ourinvention to its use in connection with such machine.

hat we claim as new and desire to secure by Letters Patent is- 1.. In agrindinganachihe, the combination of a frame, a grinding-wheel journaledthereon, a work-holder, means for reciproeating the work-holder, a guideon the frame, and means carried by said work-holder, slidable toward andaway from said workholder and transversely of the path of movementthereof, and bearing against said guide, for moving the work-holder intoand out of grinding position.

2. In a grinding-machine, the combination of a frame, a grinding-wheeljournaled thereon, a work-holder, means for reciprocating thework-holder, a guide on the frame, rollor-mechanism 'constructed andarranged to bear against the guide and to travel with the work-holder inits reciprocating move ments and to be independently movable toward andaway from said work-holder, and means for moving the work-holderrelative to the roller-mechanism, for the purpose set forth.

3. In a grinding-machine, the combination of a frame, a grinding-wheeljourn'aled thereon, a swinging bed on the frame, a workholderreciprocably mounted on the bed, means for reciprocating thework-holder, a guide on the frame, an arm connected with the work-holderand composed of relatively movable telescoping sections, constructed andarranged to bear at one of its sections against the guide, and means formoving the sections relative to each other, for the purpose set forth.

4. In a grinding-machine, the combination of a frame, a grinding-wheeljournaled thereon, a work-holder, means for reciproeating thework-holder, a guide on the frame, and means slidably connected with theworkholder, movable against said guideand constructed and arranged to bemoved toward and away from said work-holder against the guide in thetravel of said firstnamed means for moving the work-holder into and outof grinding position.

5. In a grinding-machine, the combination of a frame, a grinding-wheeljournaled thereon, a ivork-holder, means for reciprocating theworkholder, a guide on the frame, and roller-equipped means slidablyconnected with the work holder, movable against said guide andconstructed and arranged to be moved toward and away from saidwork-holder against the guide, in the travel of said first-named means,for moving the work-holder into and out of grinding position.

6. In a grinding-machine, the combination of a frame, a grinding-wheeljournaled thereon, a work-holder, means for reciprocating thework-holder, a guide on the frame,

roller mechanism slidably connected with the work-holder, movableagainst said guide and constructed and arranged to be moved to- Ward andaway from the work-holder, and a spring for maintaining said rollermechanism in contact with said guide during the movement of thework-holder, for the purpose set forth.

7. In a grinding-machine, the combina tion of a frame, a grinding-wheeljournaled thereon, a swinging bed on said frame, a work-holder on saidbed, means for reciprocating the work-holder, a guide on the frame,means movable with the work-holder and adapted to bear against saidguide for moving the work-holder-toward and away from said guide, andmeans for maintaining said second-named means in contact with said guideduring the movement of the workholder, for the purpose set forth.

8. In a grinding-machine, the-combination of a frame, a grinding-wheeljournaled thereon, a swinging bed on the frame, a work-holderreciprocably mounted on the bed, means for reciprocating thework-holder, and means for swinging the bed with reference to thegrinding-wheel comprising a guide on the frame, a roller carried by thework-holder and bearing against said guide and constructed and arrangedto travel with the work-holder and to be movable relative to it, theconnection between said reciprocating means and work-holder beingconstructed and arranged to arrest the movement of the work-holderduring a portion of the movement of the reciprocating means, and duringsuch arresting to cause the roller to move relative to said work-holder,for the purpose set forth. 7

9. In a grinding-machine, the combination of a frame, a grinding-wheeljournaled thereon, a swinging bed on the frame, a workholderreciprocably mounted on the bed, means for reciprocating thework-holder, a guide on the frame, an arm operatively connected with thework-holder and carrying a roller bearing against said guide and movablewith relation to the arm, and means for moving the roller relative tosaid arm during a portion of the movement of the reciprocating means.

10. In a grinding-machine, the combination of a frame, a grinding-wheeljournaled thereon, a swinging bed on the frame, a Workholderreciprocably mounted on the bed, a guide on the frame, roller mechanismcarried by said holder, bearing against said guide and movable withrelation to said work-holder, and means for reciprocating saidwork-holder having flexible connection With said roller mechanism, forthe purpose set forth.

11. In a grinding-machine, the combination of a frame, a grinding-wheeljournaled thereon, a swinging bed on the frame, a workholderreciprocably mounted on the bed,

means for reciprocating the work-holder, a guide on the frame, across-head connected with the Work-holder and carrying a knuckleconnected with the reciprocating means, a roller movable relative to thecross-head operatively connected with the knuckle to bear against saidguide, for the purpose set forth.

12. In a grinding-machine, the combination of a frame, a grinding-wheeljournaled thereon, a swinging bed on the frame, a workholderreciprocably mounted on the bed, means for reciprocating the workholder,a guide on the frame, a cross-head connected with the work-holder andcarrying a knuckle connectedwith the reciprocating means, a rolleroperatively connected with the knuckle to bear against said guide andmovable relative to the cross-head, and means for holding said rolleragainst the guide, for the purpose set forth.-

13. In a grinding-machine, the combination of a frame, a grinding-wheeljournaled thereon, a swinging bed on the frame, a work-holderreciprocably mounted on the bed, means for reciprocating the workholder,a guide on the frame, a cross-head connected with the Work-holder andcarrying in a recess in its end a knuckle connected with thereciprocating means, a sliding block operatively connected with theknuckle, plates secured to said block, a second block embraced by saidplates and a roller journaled in said second block to bear against theguide, for the purpose set forth.

1.4. In a grinding-machine the combination of a frame, a grinding-wheeljournaled nected with the work-holder and movable relative theretoduring a portion of the operation of the reciprocating means, theconnection between said reciprocating means being constructed andarranged to move the roller relative to the holder during the operationof the reciprocating means, and latch-mechanism for arresting themovement of the Workholder during a portion of the movement of thereciprocating means.

15. In a grinding-machine, the combination of a frame, a grinding-wheeljournaled thereon, a swinging bed on the frame, a workholderreciprocably mounted on the bed, means for reciprocating thework-holder, a cross-head movable with the workholder, a sliding-knuckleconnection between said reciprocating means and work-holder, a guide onthe frame, a roller operatively connected with the knuckle and bearingagainst the guide, a locking-shoulder having a cam-surface carried bythe cross-head, a locking device constructed and arranged to engagewithsaid locking-shoulder at the end of the forward movement of thework-holder, and to engage said cam-surface in the movement of the camtransversely of the locking-device, for the purpose set forth.

WILLIAM J. BASTIAN. FRANK GRANITZ. In presence of J. H. LANDES, SoLSALIUS.

